CN208582411U - Magnetic fluid detection device - Google Patents
Magnetic fluid detection device Download PDFInfo
- Publication number
- CN208582411U CN208582411U CN201590001573.4U CN201590001573U CN208582411U CN 208582411 U CN208582411 U CN 208582411U CN 201590001573 U CN201590001573 U CN 201590001573U CN 208582411 U CN208582411 U CN 208582411U
- Authority
- CN
- China
- Prior art keywords
- magnetic
- output
- magnetic sensor
- control unit
- sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/41—Detecting, measuring or recording for evaluating the immune or lymphatic systems
- A61B5/414—Evaluating particular organs or parts of the immune or lymphatic systems
- A61B5/418—Evaluating particular organs or parts of the immune or lymphatic systems lymph vessels, ducts or nodes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/74—Details of notification to user or communication with user or patient ; user input means
- A61B5/7405—Details of notification to user or communication with user or patient ; user input means using sound
- A61B5/7415—Sound rendering of measured values, e.g. by pitch or volume variation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/007—Environmental aspects, e.g. temperature variations, radiation, stray fields
- G01R33/0082—Compensation, e.g. compensating for temperature changes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
- G01R33/038—Measuring direction or magnitude of magnetic fields or magnetic flux using permanent magnets, e.g. balances, torsion devices
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
- A61B2562/02—Details of sensors specially adapted for in-vivo measurements
- A61B2562/0223—Magnetic field sensors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
- A61B2562/02—Details of sensors specially adapted for in-vivo measurements
- A61B2562/0271—Thermal or temperature sensors
Abstract
The utility model discloses magnetic fluid detection device.The project of the utility model is the detection operation that the confirmation of testing result can be made to become easy, and can not carry out magnetic fluid with being interfered by cable.Solution is magnetic fluid detection device (1), detection is injected into the magnetic fluid of organism, the magnetic fluid detection device (1) has: test section (2), and the magnetic fluid inside organism is detected in the state of touching or proximating to organism；Output section (3), with scheduled way of output output test result；Control unit (4) controls output section (3) according to the detected value inputted from test section (2)；And power supply unit (5), battery (B) is used as power supply, power supply is carried out to test section (2), output section (3) and control unit (4), and test section (2), output section (3), control unit (4) and power supply unit (5) are integrated into can use singlehanded holding.
Description
Technical field
The magnetic fluid detection device that the utility model relates to use when detection is injected into the magnetic fluid of organism.
Background technique
Now, about the malignant tumour as solid cancer, it is known that the cancer cell in tumour is transferred to whole body via lymphatic vessel,
Vasculolymphatic cancer cell is entered to be captured by the lymph node of midway.Thus, in the case where having found tumour, determination, which is located at, to be come from
Lymph node, that is, sentinel lymph node (Sentinel of the downstream of the lymthoma of lesion and the lymph inflow from lesion
Lymph Node), the sentinel nodal tissue of the determination is extracted at the time of surgery, in the transfer for thinking to have cancer cell herein
In the case of, the lymph node dissection hand that carries out the excision of lesion and all remove the lymph node of sentinel lymph node and its periphery
Art.On the other hand, in the case that be not considered as has the transfer of cancer cell in lymph node, before only excision is extracted for diagnosing
Whistle lymph node tissue does not cut off the lymph node on its periphery and directly remains, and has thus implemented the operation hand for mitigating the burden of patient
Method.
As the gimmick of such determining sentinel lymph node, following gimmick is advocated: magnetic fluid is injected into lesion,
After reasonable time, the sentinel lymph node of the magnetic fluid savings of the injection is detected (for example, referring to special with Magnetic Sensor
Sharp document 1,2).Previous magnetic fluid detection device for this gimmick has in the shape touched or proximated to organism
The probe of the magnetic fluid inside organism is detected under state and the control device of probe, testing result are connected to via cable
(for example, magneticflux testing value) is with the scheduled way of output (for example, numerical value is shown) from the output section for being set to control device
Output.
Existing technical literature
Patent document
Patent document 1: No. 3847694 bulletins of Japanese Patent No.
Patent document 2: No. 3960558 bulletins of Japanese Patent No.
Utility model content
However, the control device with output section is set to far from probe in previous magnetic fluid detection device
Place so generating the situation for being difficult to confirm testing result, or probe and the cable that control device is attached is possible to
It can become and interfere.In addition, the equipment for being brought into operating room carries out the sterilization treatment with transparent sterilizing bag cladding entirety etc.,
But previous magnetic fluid detection device includes probe, control device and cable, so in the presence of work is spent in sterilization treatment
Husband's such problems.
In addition, magnetic fluid detection device documented by patent document 1 has actuator, the electromagnetism for needing big electric power
Iron is possible to not be available in the environment of power consumption is restricted so power consumption all becomes larger in any case.In addition, 2 institute of patent document
The magnetic fluid detection device of record is advantageous low power consumption on not needing this aspect of actuator, electromagnet, but due to
Control unit is constituted by analog circuit, so circuit is complicated, component number of packages is more, also limited for low power consumption.
The utility model is to complete intending to solve the above problem, and the utility model of technical solution 1 is a kind of magnetic
Property fluid detecting device, detection is injected into the magnetic fluid of organism, which is characterized in that the magnetic fluid detection device tool
Standby: test section detects the magnetic fluid inside organism in the state of touching or proximating to organism；Output section, with pre-
Fixed way of output output test result；Control unit controls the output section according to the detected value inputted from the test section；Electricity
Source portion carries out power supply, the inspection to the test section, the output section and the control unit using battery as power supply
Survey portion has: Magnetic Sensor；And permanent magnet is configured at magnetic sensing using the Magnetic Sensor as symmetrical centre with symmetry shape
Around device, towards organism generate magnetic flux, the permanent magnet when nearby be not present magnetic fluid when magnetic flux density substantially
0, and form the close magnetic flux density white space correspondingly risen of magnetic flux density and magnetic fluid, the magnetic sensor configuration
In the magnetic flux density white space, moreover, the test section, the output section, the control unit and the power supply unit quilt
One chemical conversion can be held with singlehanded.
In addition, the utility model of technical solution 2 is that magnetic fluid detection device, feature documented by technical solution 1 exist
In the control unit is constituted using microcontroller unit, and the Magnetic Sensor is connected via external wiring is not exposed to
In the control unit.
In addition, the utility model of technical solution 3 is magnetic fluid detection device documented by technical solution 1 or 2, it is special
Sign is that the test section has temperature sensor, which closely configures with the Magnetic Sensor, detects the magnetic
The temperature of sensor, the control unit have: temperature correction unit, correct the magnetic according to the detected value of the temperature sensor
The detected value of sensor；And testing result output unit, the detected value of the Magnetic Sensor after making correction is with scheduled defeated
Mode is exported from the output section out.
In addition, the utility model of technical solution 4 is that magnetic fluid detection device, feature documented by technical solution 3 exist
In the control unit has: Magnetic Sensor a reference value holding unit is resetted according to scheduled a reference value and is operated, the magnetic is passed
The detected value of sensor remains Magnetic Sensor a reference value；And temperature sensor a reference value holding unit, according to a reference value
Reset operation, the detected value of the temperature sensor remained into temperature sensor a reference value, the temperature correction unit according to
Difference, that is, temperature sensor difference value of the current detected value of the temperature sensor and the temperature sensor a reference value, school
Difference, that is, Magnetic Sensor difference value of the current detected value of the just described Magnetic Sensor and the Magnetic Sensor a reference value, the inspection
Surveying result output unit exports the Magnetic Sensor difference value after correction from the output section in a predetermined manner.
In addition, the utility model of technical solution 5 is that magnetic fluid detection device, feature documented by technical solution 4 exist
In conducting-heat elements are between the Magnetic Sensor and the temperature sensor.
In addition, the utility model of technical solution 6 is magnetic fluid detection device documented by technical solution 1,2,4 or 5,
It is characterized in that, the output section can export sound, the control unit has detection sound output control unit, and the detection sound is defeated
Control unit exports the detected value of the Magnetic Sensor from the output section as detection sound out, the detection sound output control
Unit exports the detection sound of scheduled frequency with scheduled periodic intermittent from the output section, and is passed according to the magnetic
The detected value of sensor makes the frequency and mechanical periodicity that detect sound.
In addition, the utility model of technical solution 7 is that magnetic fluid detection device, feature documented by technical solution 6 exist
In the detection sound output control unit makes the frequency for detecting sound with exponential curve shape according to the detected value of the Magnetic Sensor
Variation.
In addition, the utility model of technical solution 8 is the detection dress of magnetic fluid documented by technical solution 1,2,4,5 or 7
Set, which is characterized in that have: shell accommodates the control unit and power supply unit；And non magnetic axis, from the front end of the shell
Portion extends, and has test section in its top end part, which has bending section in tip side.
Utility model effect
According to the utility model of technical solution 1, test section, output section, control unit and power supply unit are integrated into can
It is held with one hand, so not only the confirmation of testing result becomes easy, but also magnetic flow can not be carried out with being interfered by cable
The detection operation of body.In addition, integrated magnetic fluid detection device can simply be coated with sterilizing bag, so bringing into one's hands
Sterilization treatment when art room becomes easy.In addition, magnetic fluid is detected using the combination of permanent magnet and Magnetic Sensor, so
Power consumption can be greatly reduced in the case where compared to actuator, electromagnet is used, as a result, battery driving can not only be carried out, and
And the battery-based up time can also be extended.Moreover, magnetic sensor configuration is in magnetic flux density white space, so low
While power consumption, the variation close to associated magnetic flux density with magnetic fluid can be detected with high sensitivity.
In addition, according to the utility model of technical solution 2, control unit structure using microcontroller unit (digital circuit)
At, thus not only compared to control unit is constituted by analog circuit the case where, component number of packages is substantially cut down, but also can make power consumption
It is reduced to and is able to carry out battery-driven level.In addition, can enumerate as project when realizing digitlization due to will be from detection
The analog signal that portion obtains is transformed to the error (quantization error) generated when digital signal and the accuracy decline of signal, in magnetic flow
It is difficult to the project detected in the case that the amount of body is few, but in the present invention, will test portion and control integrally, warp
By not being exposed to external wiring connection, so can reduce the noise from wiring, signal caused by quantization error is compensated
The decline of precision.
In addition, correcting the detection of Magnetic Sensor according to the detected value of temperature sensor according to the utility model of technical solution 3
Value, so it is also able to suppress the variation of detected value caused by temperature change (output valve) even if Magnetic Sensor has temperature dependency,
Accurately detect magnetic fluid.
In addition, according to the utility model of technical solution 4, to operate the detected value of Magnetic Sensor when a reference value reset unit
On the basis of, variable quantity (Magnetic Sensor difference value) of the output detection value relative to the benchmark, so can reduce Magnetic Sensor
The influence of the external environments error main cause such as individual difference, earth magnetism, noise, improves the detection accuracy of magnetic fluid.In addition, with
On the basis of the detected value of temperature sensor when operation a reference value reset unit, the variable quantity according to detected value relative to the benchmark
(temperature sensor difference value) Lai Jiaozheng Magnetic Sensor difference value, so do not influenced by the individual difference of temperature sensor,
Magnetic Sensor difference value can precisely be corrected.
In addition, according to the utility model of technical solution 6, when the detected value of Magnetic Sensor is exported as detection sound, root
Make the frequency and mechanical periodicity that detect sound according to the detected value of Magnetic Sensor, so can be according to the frequency and period for detecting sound
Readily recognize the detected value of Magnetic Sensor.
In addition, making the frequency for detecting sound with index according to the detected value of Magnetic Sensor according to the utility model of technical solution 7
Curve-like variation, so the frequency for detecting sound can be made when rising with magnetic fluid close and the detected value of Magnetic Sensor
Rate significantlys change reliably to report the close of magnetic fluid.
Detailed description of the invention
Fig. 1 is the block diagram for showing the structure of magnetic fluid detection device of the embodiments of the present invention.
Fig. 2 is the whole side view for showing the magnetic fluid detection device of the embodiments of the present invention.
Fig. 3 is the enlarged cross-sectional view for showing the test section of magnetic fluid detection device of the embodiments of the present invention,
(A) be Fig. 2 X-X cross-sectional view, (B) is the Y-Y cross-sectional view of Fig. 2.
Fig. 4 is the explanatory diagram for showing the testing principle of magnetic fluid detection device of the embodiments of the present invention, (A)
It is to show nearby there is no the schematic diagram of the line of magnetic induction of the state of magnetic fluid distribution, (B) is to show magnetic fluid to approach
State the line of magnetic induction distribution schematic diagram.
Fig. 5 is the flow chart for showing the detection Control sequence of the control unit of the embodiments of the present invention.
Fig. 6 is the detection magnetic flux density and detection sound for the magnetic fluid detection device for showing the embodiments of the present invention
Relationship explanatory diagram, (A) be show detection magnetic flux density and detect sound frequency relationship curve graph, (B) is to show inspection
It surveys magnetic flux density and detects the curve graph of the relationship of the pulse period of sound.
Description of symbols
1: magnetic fluid detection device；2: test section；3: output section；4: control unit；5: power supply unit；8: display；9: raising
Sound device；10: Magnetic Sensor；11: temperature sensor；12: permanent magnet；19: reset switch；B: battery；S: magnetic flux density blank
Region.
Specific embodiment
Hereinafter, with reference to the accompanying drawings, illustrating the embodiments of the present invention.In Fig. 1,1 is that detection is injected into organism
The magnetic fluid detection device of magnetic fluid, the magnetic fluid detection device 1 have: test section 2, being contacted with organism or
The magnetic fluid inside organism is detected in the state of；Output section 3, with scheduled way of output output test result；Control
Portion 4 processed controls output section 3 according to detected value inputted from test section 2 etc.；And power supply unit 5, it is right using battery B as power supply
Test section 2, output section 3 and control unit 4 carry out power supply.
As shown in Figure 1 and Figure 2, test section 2, output section 3, control unit 4 and the electricity of magnetic fluid detection device 1 are constituted
Source portion 5, which is integrated into, can use singlehanded holding.Be concretely demonstrated, magnetic fluid detection device 1 have can with one hand
The shell 6 of the handle shapes (cylindrical shape) of holding contains control unit 4 and power supply unit 5 in the inside of the shell 6.In addition,
It is extended non magnetic axis 7 in the front end of shell 6, test section 2 is set to the top end part of the non magnetic axis 7.In addition, in this reality
It applies in mode, the display 8 for constituting output section 3 is set to the week face of shell 6, and the loudspeaker 9 for constituting output section 3 is set to
The rear end of shell 6, but as long as being integrated into magnetic fluid detection device 1, then these configurations are arbitrary.In addition, non-magnetic
Property axis 7 be the hollow shaft with the hollow portion passed through of the wiring C for making to will test portion 2 and control unit 4 is attached, in Qi Ding
End side is formed with bending section 7a, and bending section 7a is used to make direction suitableization of test section 2.
As shown in figure 3, test section 2 has the Magnetic Sensor 10 for the top end part for being set to non magnetic axis 7, temperature sensor 11
And the heat insulating member 13 of permanent magnet 12 and cladding Magnetic Sensor 10, temperature sensor 11 and permanent magnet 12.This reality
The Magnetic Sensor 10 for applying mode is Hall element, and temperature sensor 11 is thermistor, but inspection in addition to this also can be used
Survey element.
Permanent magnet 12 is symmetrical centre with Magnetic Sensor 10, is configured at around the Magnetic Sensor 10 with symmetry shape, court
Magnetic flux is generated to organism.Specifically, use cylindric rare earth element magnet as permanent magnet 12, using its pole N side as
Top end face is configured using the pole S side as rear end face.Rare earth element magnet is magnetic characteristic (relict flux density (Br), retentiveness
(bHc, iHc), Maximum Energy Product (BHmax) etc.) high super magnetic permanent magnet, for example, can be using used as dilute
The samarium (Sm) of great soil group element, neodymium (Nd) are come the general magnet that produces.
When configuration permanent magnet 12 as described above, magnetic flux density white space is formed on the central axis of permanent magnet 12
S.As shown in figure 4, magnetic flux density white space S is when nearby there is no line of magnetic inductions when magnetic fluid to be not achieved and magnetic flux density
Substantially 0 and due to magnetic fluid close to the correspondingly line of magnetic induction collects and region that magnetic flux density rises, by this
The region that the variation of the magnetic flux density of sample is big configures Magnetic Sensor 10, can be improved the magnetic fluid based on Magnetic Sensor 10
Detection sensitivity.In Fig. 4, D indicates magnetic fluid (sentinel lymph node).
By the way, in the present embodiment, as shown in figure 4, by (being pushed up from the pole N of cylindric permanent magnet 12
End surface side) by the inner circumferential side of permanent magnet 12 towards the pole S (rear end surface side) of permanent magnet 12 the line of magnetic induction with from forever
The pole N of long magnet 12 by the peripheral side of permanent magnet 12 towards the pole S of permanent magnet 12 the line of magnetic induction boundary part
The region of generation is set as magnetic flux density white space S.
Temperature sensor 11 is closely configured with Magnetic Sensor 10, detects the temperature of the Magnetic Sensor 10.At this point, it is preferred that
By the high conducting-heat elements 14 of thermal conductivity (for example, metal plate, thermal conductivity bonding agent etc.) between Magnetic Sensor 10 and temperature sensor
Between 11.The reason for this is that because the temperature change of Magnetic Sensor 10 is quickly transferred to temperature sensor via conducting-heat elements 14
11, the temperature of Magnetic Sensor 10 can be detected in real time and precisely.
Heat insulating member 13 is for example formed by the low resin material of thermal conductivity, cladding Magnetic Sensor 10, temperature sensor 11 with
And permanent magnet 12.Moreover, heat insulating member 13 is passed when detection is injected into the magnetic fluid of organism between the organism and magnetic
Between sensor 10 and temperature sensor 11, to inhibit the temperature change of Magnetic Sensor 10 caused by body temperature.In addition, insulation part
Guard block of the part 13 also as Magnetic Sensor 10, temperature sensor 11 functions, for example, constituting by rare earth element magnet
Permanent magnet 12 due to the magnetic force of its strength with magnetic substance adsorb when, heat insulating member 13 has been intervened as guard block, from
And prevent the breakage of Magnetic Sensor 10 and temperature sensor 11.
As shown in Figure 1, power supply unit 5 has: the battery B as power supply；Preventing the anti-anti- connection connected of battery B prevents
Circuit 15；And by the voltage transformation of battery B be test section 2, output section 3 and control unit 4 required voltage power circuit
16.In addition, battery B is either the dry cell being correspondingly replaced with the reduction of battery residual, is also possible to and battery residual
The rechargable battery that is correspondingly electrically charged of reduction.
As shown in Figure 1, control unit 4 is the control list of composition using microcontroller unit (for example, single chip micro-computer)
Member, in its input side, other than aforementioned Magnetic Sensor 10 and temperature sensor 11, the Magnetic Sensor 17 of earth magnetism correction is passed through
It is connected by A/D converter 18, and connects reset switch 19, height-regulating/reduction loudspeaker 9 sound by dual-purpose for power switch
The Switch such as switch 20, volume decrease low switch 21 are turned up in the volume of amount.In addition, in the outlet side of control unit 4, via driver 22
The display 8 for exporting the detected value of Magnetic Sensor 10 as numerical value is connected (for example, 7 sections of light-emitting diode displays, liquid crystal
Display etc.), and via the connection of amplifier 23 for being raised using the detected value of Magnetic Sensor 10 as what detection sound exported
Sound device 9.
The Magnetic Sensor 17 of earth magnetism correction is configured in shell 6 to detect earth magnetism, by taking and Magnetic Sensor 10
The difference of detected value eliminate detection error caused by earth magnetism, omit the detailed description of earth magnetism correction process.In addition, about
Power supply ON/OFF control processing corresponding with the long press operation of reset switch 19 is opened with volume height-regulating switch 20 and volume reduction
The corresponding volume control processing of operation for closing 21, also omits detailed description.
Control unit 4 as and with the cooperating for program for being written into ROM according to the detected value of temperature sensor 11 come school
The detected value of the temperature correction unit of the detected value of positive Magnetic Sensor 10, the in a predetermined manner Magnetic Sensor 10 after output calibration
Testing result output unit, make the detected value of Magnetic Sensor 10 as the detection that exports from output section 3 (loudspeaker 9) of detection sound
Sound output control unit etc. functions.
As the formula of the detected value for correcting Magnetic Sensor 10 according to the detected value of temperature sensor 11, can make
With following formula.Wherein, if V ' is the detected value (output valve) after the correction of Magnetic Sensor 10, V is the correction of Magnetic Sensor 10
Preceding detected value, T are the detected value of temperature sensor 11, and B is magnetic field (detected value of Magnetic Sensor 10), and α, β, γ, δ are correction
Coefficient.
The formula 1V ' of correction=V- α T
The formula 2V ' of correction=V- α T+ β T2
The formula 3V ' of correction=(1- γ T) V
The formula 4V ' of correction=V- α T- δ BT
In turn, the control unit 4 of present embodiment in order to reduce Magnetic Sensor 10 and temperature sensor 11 individual difference,
The influence of noise equal error main cause sets a reference value of each sensor 10,11, uses a reference value and current detection
The difference of value is handled to be corrected.It is concretely demonstrated, the control unit 4 of present embodiment is as according to reset switch 19
The detected value V of Magnetic Sensor 10 is remained Magnetic Sensor a reference value V by operation0Magnetic Sensor a reference value holding unit, basis
The detected value T of temperature sensor 11 is remained temperature sensor a reference value T by the operation of reset switch 190Temperature sensor
A reference value holding unit functions.Then, temperature correction unit is according to the current detected value T and temperature of temperature sensor 11
Sensor Ref value T0Difference, that is, temperature sensor difference value, correct Magnetic Sensor 10 current detected value V and magnetic sense
Device a reference value V0Difference, that is, Magnetic Sensor difference value.It is then detected that result output unit is in a predetermined manner after output calibration
Magnetic Sensor difference value Δ V '.
As the formula for carrying out such correction process, it is able to use following formula.
5 Δ V ' of formula=(V-V of correction0)-α (T-T0)
6 Δ V ' of formula=(V-V of correction0)-α (T-T0)+β (T-T0)2
7 Δ V ' of formula={ 1- γ (T-T of correction0) (V-V0)
8 Δ V ' of formula=(V-V of correction0)-α (T-T0)-δ B (T-T0)
Hereinafter, illustrating to be corrected the Control sequence in the case where handling using formula 5 referring to Fig. 5.
As shown in figure 5, in detection control, firstly, in the detected value V and temperature sensor that have input Magnetic Sensor 10
After 11 detected value T (S1, S2), the operation (S3) of reset switch 19 is judged.It, will in the case where the judging result is to connect
The detected value V of Magnetic Sensor 10 is set as Magnetic Sensor a reference value V0(S4: Magnetic Sensor a reference value holding unit), and will
The detected value T of temperature sensor 11 is set as temperature sensor a reference value T0(S5: temperature sensor a reference value holding unit).
After in these reference values, processing terminate or in the case where being judged as reset switch 19 to disconnect, root
According to the current detected value T and temperature sensor a reference value T of temperature sensor 110Difference, that is, temperature sensor difference value, school
The current detected value V and Magnetic Sensor a reference value V of positive Magnetic Sensor 100Difference, that is, Magnetic Sensor difference value (S6: temperature school
Positive unit).
Later, the Magnetic Sensor difference value Δ V ' after correction is shown in display 8 (S7: testing result is defeated as numerical value
Unit out), and (S8: testing result output unit, detection sound output control unit) is exported from loudspeaker 9 as detection sound.
Then, these processing steps (S1~S8) are repeated in a manner of Infinite Cyclic, until having power remove operation.This
Outside, in the present embodiment, Magnetic Sensor difference value Δ V ' is transformed to magnetic flux density (unit is μ T), makees the magnetic flux density
It is shown in display 8 for numerical value, but also can be set to the display based on bar graph etc..
As shown in fig. 6, detection sound output control unit makes the detection sound of scheduled frequency with scheduled periodic intermittent
It is exported from loudspeaker 9, and makes frequency and the week of detection sound according to the detected value of Magnetic Sensor 10 (magneticflux testing value)
Phase variation.
It is concretely demonstrated, as shown in (B) of Fig. 6, the detection sound output control unit of present embodiment makes to detect sound
The output period (pulse period) be inversely proportional at the extremely low region of magnetic flux density (10 μ T or less) relative to magnetic flux density, super
This region is crossed, no matter how magnetic flux density is all set as constant.That is, under the original state for not detecting magnetic fluid,
Export the big detection sound of output gap as " bi__bi__bi__ ... ", when the detection of magnetic fluid starts, output
The small detection sound of output gap as " bibibi ... ", to report that the detection of magnetic fluid starts.Hereinafter, showing according to magnetic
Flux density finds out the formula in the output period of detection sound.Wherein, output period (unit msec) is set as y, by magnetic flux density
(unit is μ T) is set as MFD.
In the case where [0≤MFD≤5]: y=-103*MFD+710
In the case where [5≤MFD≤10]: y=-35*MFD+380
In the case where [10≤MFD]: y=20
In addition, the detection sound output control unit of present embodiment keeps the frequency for detecting sound opposite as shown in (A) of Fig. 6
In magnetic flux density with the variation of exponential curve shape.That is, making to examine when rising with magnetic fluid close and magnetic flux density
The frequency of acoustic significantlys change reliably to report the close of magnetic fluid.Detection sound is found out according to magnetic flux density hereinafter, showing
Frequency formula.Wherein, frequency (unit Hz) is set as f.
In the case where [MFD < 10]: f=1501
In the case where [10≤MFD≤100]: f=1365.56/ (1-0.0090366*MFD)
In the case where [100 < MFD]: f=14178
According to the magnetic fluid detection device 1 for the present embodiment that narration is constituted like that, test section 2, output section 3, control
Portion 4 and power supply unit 5, which are integrated into, can use singlehanded holding, so not only the confirmation of testing result becomes easy, but also
It can not carry out the detection operation of magnetic fluid with being interfered by cable.In addition, integrated magnetic fluid detection device 1 can be used
Sterilizing bag simply coats, so sterilization treatment when being brought into operating room becomes easy.
In addition, using battery B as power supply, and magnetism is detected using the combination of permanent magnet 12 and Magnetic Sensor 10
Fluid extends the up time based on battery B so being able to suppress power consumption compared to the combination of electromagnet and Magnetic Sensor.
In addition, Magnetic Sensor 10 is configured at magnetic flux density white space S, so can be while economize on electricity, sensitivity is good
The variation close to associated magnetic flux density with magnetic fluid is detected well.
In addition, control unit 4 is constituted using microcontroller unit (digital circuit), so compared to by analog circuit structure
The case where at control unit 4, not only component number of packages is substantially cut down, but also lower power consumption can be made to being able to carry out battery-driven water
It is flat.
In addition, can enumerate as the project realized when digitizing due to becoming in the analog signal that will be obtained from test section 2
It is the error (quantization error) that is generated when being changed to digital signal and the accuracy decline of signal, difficult in the case where the amount of magnetic fluid is few
With the project detected, but in the present invention, will test portion 2 carried out with control unit 4 it is integrated, it is outer via not being exposed to
The wiring C connection in portion compensates the decline of signal accuracy caused by quantization error so can reduce the noise from wiring C.
In addition, the detected value of Magnetic Sensor 10 is corrected according to the detected value of temperature sensor 11, so even if magnetic senses
Device 10 has temperature dependency, is also able to suppress the variation of detected value caused by temperature change, accurately detects magnetic fluid.
In addition, output detection value is relative to the benchmark on the basis of the detected value of the Magnetic Sensor 10 when resetting operation
Variable quantity (Magnetic Sensor difference value), so can reduce the individual difference of Magnetic Sensor 10, noise equal error main cause
It influences, improves the detection accuracy of magnetic fluid.
In addition, on the basis of the detected value of the temperature sensor 11 when resetting operation, according to detected value relative to the benchmark
Variable quantity (temperature sensor difference value) correct Magnetic Sensor difference value, so the not individual difference by temperature sensor 11
Influence, can precisely correct Magnetic Sensor difference value.
In addition, when being exported the detected value of Magnetic Sensor 10 as detection sound, according to the detection of Magnetic Sensor 10
Value makes the frequency and mechanical periodicity that detect sound, passes so magnetic can be readily recognized according to the frequency and period of detection sound
The detected value of sensor 10.
In addition, making the frequency for detecting sound with the variation of exponential curve shape, so adjoint according to the detected value of Magnetic Sensor 10
When magnetic fluid close and the detected value of Magnetic Sensor 10 rise, the frequency for detecting sound can be made to significantly change reliably to report
Accuse the close of magnetic fluid.
Claims (8)
1. a kind of magnetic fluid detection device, detection is injected into the magnetic fluid of organism, which is characterized in that the magnetic fluid
Detection device has:
Test section detects the magnetic fluid inside organism in the state of touching or proximating to organism；
Output section, with scheduled way of output output test result；
Control unit controls the output section according to the detected value inputted from the test section；
Power supply unit carries out power supply to the test section, the output section and the control unit using battery as power supply,
The test section has:
Magnetic Sensor；And
Permanent magnet is configured at around the Magnetic Sensor using the Magnetic Sensor as symmetrical centre with symmetry shape, towards organism
Magnetic flux is generated,
Permanent magnet magnetic flux density substantially 0 when magnetic fluid is nearby not present, and form magnetic flux density and magnetic flow
The close magnetic flux density white space correspondingly risen of body,
The magnetic sensor configuration in the magnetic flux density white space,
Moreover, the test section, the output section, the control unit and the power supply unit, which are integrated into, can use singlehanded
It holds.
2. magnetic fluid detection device according to claim 1, which is characterized in that
The control unit is constituted using microcontroller unit,
The Magnetic Sensor is connected to the control unit via external wiring is not exposed to.
3. magnetic fluid detection device according to claim 1 or 2, which is characterized in that
The test section has the temperature sensor for the temperature for detecting the Magnetic Sensor,
The control unit has:
Temperature correction unit corrects the detected value of the Magnetic Sensor according to the detected value of the temperature sensor；And
Testing result output unit, the detected value of the Magnetic Sensor after making correction is with the scheduled way of output from the output
Portion's output.
4. magnetic fluid detection device according to claim 3, which is characterized in that
The control unit has:
Magnetic Sensor a reference value holding unit is resetted according to scheduled a reference value and is operated, and the detected value of the Magnetic Sensor is protected
It holds as Magnetic Sensor a reference value；And
Temperature sensor a reference value holding unit is resetted according to a reference value and is operated, by the detected value of the temperature sensor
Temperature sensor a reference value is remained,
Current detected value and the temperature sensor a reference value of the temperature correction unit according to the temperature sensor
Difference, that is, temperature sensor difference value corrects the current detected value of the Magnetic Sensor and the difference of the Magnetic Sensor a reference value
Divide i.e. Magnetic Sensor difference value,
The testing result output unit exports the Magnetic Sensor difference value after correction from the output section in a predetermined manner.
5. magnetic fluid detection device according to claim 4, which is characterized in that
Conducting-heat elements are between the Magnetic Sensor and the temperature sensor.
6. according to claim 1, magnetic fluid detection device described in 2,4 or 5, which is characterized in that
The output section can export sound,
The control unit has detection sound output control unit, which makes the detection of the Magnetic Sensor
Value is exported as detection sound from the output section,
The detection sound output control unit makes the detection sound of scheduled frequency with scheduled periodic intermittent from the output
Portion's output, and according to the detected value of the Magnetic Sensor, make the frequency and mechanical periodicity that detect sound.
7. magnetic fluid detection device according to claim 6, which is characterized in that
The detection sound output control unit makes the frequency for detecting sound with exponential curve shape according to the detected value of the Magnetic Sensor
Variation.
8. according to claim 1, magnetic fluid detection device described in 2,4,5 or 7, which is characterized in that have:
Shell accommodates the control unit and power supply unit；And
Non magnetic axis extends from the front end of the shell, has test section in its top end part,
The non magnetic axis has bending section in tip side.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2015/081812 WO2017081783A1 (en) | 2015-11-12 | 2015-11-12 | Magnetic fluid detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208582411U true CN208582411U (en) | 2019-03-08 |
Family
ID=58694950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201590001573.4U Active CN208582411U (en) | 2015-11-12 | 2015-11-12 | Magnetic fluid detection device |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20180242877A1 (en) |
| EP (1) | EP3406192A1 (en) |
| CN (1) | CN208582411U (en) |
| WO (1) | WO2017081783A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11583222B2 (en) * | 2017-05-19 | 2023-02-21 | Covidien Lp | Systems, devices, and methods for lymph specimen tracking, drainage determination, visualization, and treatment |
| JP6268325B1 (en) * | 2017-09-12 | 2018-01-24 | 株式会社 マトリックス細胞研究所 | Magnetic substance determination device and method for manufacturing the same |
| US11585882B2 (en) | 2018-04-11 | 2023-02-21 | Mars Sciences Limited | Superparamagnetic particle imaging and its applications in quantitative multiplex stationary phase diagnostic assays |
| JPWO2020013123A1 (en) * | 2018-07-08 | 2021-08-05 | 株式会社 マトリックス細胞研究所 | Magnetic material detector |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3884243B2 (en) * | 2001-06-21 | 2007-02-21 | ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー | External magnetic field measurement method, static magnetic field correction method, external magnetic field measurement apparatus, and MRI apparatus |
| US20040162477A1 (en) * | 2002-10-04 | 2004-08-19 | Olympus Corporation | Apparatus for detecting magnetic fluid identifying sentinel-lymph node |
| EP1541083A3 (en) * | 2003-12-09 | 2006-03-01 | Olympus Corporation | Magnetic fluid detection device |
| JP3960558B1 (en) * | 2007-02-23 | 2007-08-15 | 株式会社共伸 | Magnetic fluid detector and detector |
| US10634741B2 (en) * | 2009-12-04 | 2020-04-28 | Endomagnetics Ltd. | Magnetic probe apparatus |
| JP5523983B2 (en) * | 2010-08-17 | 2014-06-18 | 浜松光電株式会社 | Correction method for magnetic sensor and evaluation method of magnetic sensor |
| JP5881395B2 (en) * | 2011-12-08 | 2016-03-09 | 日本電産サンキョー株式会社 | Magnetic sensor device |
| JP5878883B2 (en) * | 2013-02-26 | 2016-03-08 | 旭化成エレクトロニクス株式会社 | Method for correcting temperature characteristics of magnetic sensor |
| JP2014188122A (en) * | 2013-03-27 | 2014-10-06 | Akita Prefectural Hospital Organization | Magnetic substance detection sensor, magnetic substance detection method, and magnetic substance detection apparatus |
-
2015
- 2015-11-12 US US15/749,135 patent/US20180242877A1/en not_active Abandoned
- 2015-11-12 WO PCT/JP2015/081812 patent/WO2017081783A1/en active Application Filing
- 2015-11-12 CN CN201590001573.4U patent/CN208582411U/en active Active
- 2015-11-12 EP EP15908303.9A patent/EP3406192A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| US20180242877A1 (en) | 2018-08-30 |
| EP3406192A1 (en) | 2018-11-28 |
| WO2017081783A1 (en) | 2017-05-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208582411U (en) | Magnetic fluid detection device | |
| US11598677B2 (en) | Tracking system and marker device to be tracked by the tracking system | |
| CN101629924B (en) | Input circuit for measuring electromagnetic solution conductivity | |
| US8222888B2 (en) | Micro-power magnetic switch | |
| EP2790030A1 (en) | Magnetic field sensing device | |
| CN101629984B (en) | Method and device for detecting open circuit and short circuit of electromagnetic solution conductivity measuring device | |
| CN104111426B (en) | A kind of remote control detection method of quantity of electricity and device | |
| CN208421051U (en) | A kind of leakage current sensor | |
| CN104065367A (en) | Magnetoresistance switch sensor with low power consumption | |
| US20150105630A1 (en) | Heart pulse monitor including a fluxgate sensor | |
| CN105318918A (en) | A non-magnetic flow metering device and a metering method thereof | |
| RU2012131513A (en) | MEASURING INSTRUMENT AND METHOD OF PLACING THE SENSOR | |
| CN106772180B (en) | A kind of optical pumped magnetometer gradient tolerance measuring device | |
| CN205247408U (en) | Fingerprint detection circuit and fingerprint sensor | |
| JP2020134158A (en) | Magnetic sensor system | |
| CN106461637A (en) | Hand-held test meter with body portion proximity sensor module | |
| CN106646278B (en) | A kind of low noise MEMS preamplifier part using high resolution detection of magnetic field | |
| JP2013148473A (en) | Current sensor | |
| CN201562008U (en) | Milliampere meter | |
| KR101156504B1 (en) | Device and method for calibration of a biosensor | |
| CN205426249U (en) | Water gauge pulse signal measurement system based on suspend and AD sampling | |
| JP6398830B2 (en) | Magnetic impedance sensor | |
| JP6077843B2 (en) | Electromagnetic flow meter | |
| JP2014021090A (en) | Current detection circuit and ultrasonic diagnostic apparatus using the current detection circuit | |
| CN202821318U (en) | Electronic pulse tester |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |